William m



(No Model.)

W. M. BABBOTT & J. H. ROBERTS.

ELEVATOR. No. 320,745. Patented June 23,1885

INVENTORS MMWMV 7W ISWEWL m, 4L 11 M.

UNITED STATES PATE T OFFICE.

WILLIAM M. BABBOTT AND JOHN ROBERTS, OF PITTSBURG, PA.

ELEVATOR.

EPECIEICA'IION forming part of Letters Patent No. 320,745, dated June 23, 1885.

Application filed October 1, 1854.

To all whom it may concern.-

Be it known that we, XVILLIAM M. BABBOTT and JOHN H. ROBERTS, citizens of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Elevators,of which improvements the following is a specification.

In the accompanying drawings,which make part of this specification, Figure 1 is a side View in elevation of a portion of an elevator embodying our invention; Fig. 2, a face view of the same; Fig. 3, a view in perspective of an elevator-bucket and a-portion of a chain, to which the same is connected; Fig. 4, a horizontal section through the bucket and connected link of the chain, and Fig. 5 a view in elevation of an open link detached.

Our invention relates to elevators or conveyers of the class in which a series of cups or buckets adapted for the conveyance of water, grain, or other materials is connected to an endless chain which passes around pulleys located adjacent to the points of supply and delivery of the buckets; and its object is to afford improved means for preventing the displacement of the oonveyer-chain from the driving-pulley by which it is moved, and for effecting the ready and secure connection of the buckets and chain, with the capacity of disconnection for the insertion of an additional length or lengths or for the attachment or removal of buckets, as may from time to time be required.

The improvements claimed are hereinafter fully set forth.

In the practice of our invention we provide an endless elevator or conveyor chain composed of alternate open links 1 formed of lengths of wire bent into substantially rectangular form, and having their ends adjacent one to the other without being secured together, as shown in Fig. 5, and strap-links 2, each of which is formed of a plate of stout sheet metal bent at its ends over the adjacent transverse or end portions of two of the open links 1, so as to engage the same by a freely-.

swiveling connection. An open-topped cup or bucket, 3, for the reception of the material to be elevated, is connected to each of the open links 1. The buckets 3, which are composed (No model of sheet metal bent into desired form and secured therein by seaming, and thereafter preferably galvanized, are herein illustrated as similar to those which are set forth in another application for Letters Patent by ourselves and Christ. Banker, of even date herewith, and do not, except as to the manner of their connection with the links, constitute part of our present invention. Such connection is effected by means of longitudinal flanges 4, projecting from the sides of the back of the bucket, each being composed, as in the application above referred to, of a double thickness of metal. The flanges 4 are turned over and clamped down on the side pieces of the open links, and thereby, in addition to insuring a firm connection between the buckets and links, we are enabled to hold the ends of the open links securely together and prevent the spreading thereof, which has been heretofore experienced, without the employment of extraneous fasteningssuch as solder and sockets or bent-up ends-adapted to engage recesses in the adjoining links, as in constructions heretofore employed. The buckets may be readily connected without liability to breakage or separation of their joints, and when the attachment of an additional length of chain is required it is only necessary to open a turned over end of one of the strap-links without disturbing any of the buckets.

The upper or delivery end of the conveyorchain passes around a driving-pulley, 5, fixed upon a shaft, 6, mounted in bearings adjacent 8 5 to a suitable discharge spout or channel, into which the material elevated by the buckets is delivered in the passage of the same around the pulley, and the lower end of the chain is carried by a pulley of any suitable construc- 0 tion located adjacent to the point of supply of the buckets. 'The periphery of the drivingpulley 5 is of polygonal form, its faces being of such length as to afford bearings alternately for the open and the strap links of the con- 5 veyer-chain, and the faces against which the strap links abut are provided with lateral guide-flanges 7, between which said links fit, and by means of which they are prevented from lateral displacement. The intermediate :00 faces, against which the flanges of the buckets which embrace the open links bear, are plane throughout, so as to present no obstacle to the passage of the chain around the pulley in the rotation thereof.

B th abo construction we dispense with e projections heretofore employed to engage open links of the conveyer-chain, and are enabled to employ strap-links as connections for the openbucket-carrying links of the chain.

We claim herein as our invention-- 1. In an elevator, the combination of an open link formed of a section of wire bent into rectangular form, with its ends located adjacent one to the other without being secured together, and a cup or bucket connected to said link by double flanges upon its back turned over and clamped down upon the sides of the link, substantially as set forth.

W'ILLIAM M. BABBOTT. JOHN H. ROBERTS.

\Vitnesses:

J. SNowDnN BELL, R. H. XVHI'r'rLEsnY. 

